#!/bin/bash
## kola:
##   # We don't need a special Ignition config and we don't modify the VM
##   exclusive: false
##   # s390x doesn't have any configuration in platforms.yaml, so
##   # platforms.json is not included in the image
##   architectures: "! s390x"
##   description: Verify that the kargs and grub.cfg commands specified in
##     platforms.json have been properly applied to the image.

# Also check cosa correctly translated platforms.yaml to platforms.json, by
# spot-checking certain expected values in platforms.json.

set -xeuo pipefail

# shellcheck disable=SC1091
. "$KOLA_EXT_DATA/commonlib.sh"

platform_json_kargs() {
    jq -r ".$1.kernel_arguments // [] | join(\" \")" < /boot/nestos/platforms.json
}

platform_json_grub_cmds() {
    jq -r ".$1.grub_commands // [] | join(\"\\\\n\")" < /boot/nestos/platforms.json
}

check_platforms_json() {
    local platform="$1" expected_kargs="$2" expected_grub_cmds="$3"
    found_kargs=$(platform_json_kargs "$platform")
    found_grub_cmds=$(platform_json_grub_cmds "$platform")
    if [ "$expected_kargs" != "$found_kargs" ]; then
        fatal "platforms.json incorrect kargs for $platform"
    fi
    if [ "$expected_grub_cmds" != "$found_grub_cmds" ]; then
        fatal "platforms.json incorrect GRUB commands for $platform"
    fi
    ok "platforms.json for $platform"
}

# Check whether platforms.json exists
if [ ! -e /boot/nestos/platforms.json ]; then
    fatal "platforms.json doesn't exist!"
fi
ok "platforms.json exists!"

# Check that platforms.json matches grub.cfg and kargs
platform=$(cmdline_arg ignition.platform.id)
expected_kargs=$(platform_json_kargs "$platform")
expected_grub_cmds=$(platform_json_grub_cmds "$platform")
if [ -n "$expected_kargs" ] && ! grep -Eq " ${expected_kargs}( |$)" /proc/cmdline; then
    fatal "Didn't find $expected_kargs in $(cat /proc/cmdline)"
fi
if [ -n "$expected_grub_cmds" ] && ! grep -qzP "\n${expected_grub_cmds}\n" /boot/grub2/grub.cfg; then
    fatal "Didn't find platform grub commands in /boot/grub2/grub.cfg"
fi
ok "platforms.json matches grub.cfg and kargs"

# Check that platforms.json has reasonable contents (i.e. that cosa
# properly forwarded it from platforms.yaml).
# Check at least one platform on each architecture.
case $(uname -m) in
x86_64)
    # Matches the legacy defaults
    check_platforms_json qemu "console=tty0 console=ttyS0,115200n8" "serial --speed=115200\nterminal_input serial console\nterminal_output serial console"
    # Different from legacy defaults
    check_platforms_json packet "console=ttyS1,115200n8" "serial --unit=1 --speed=115200\nterminal_input serial\nterminal_output serial"
    ;;
aarch64)
    # GRUB commands but no kargs
    check_platforms_json qemu "" "serial --speed=115200\nterminal_input serial console\nterminal_output serial console"
    ;;
ppc64le)
    # Kargs but no GRUB commands
    check_platforms_json qemu "console=hvc0 console=tty0" ""
    ;;
esac
ok "platforms.json has expected contents"
